Xerox DocuColor 12/DCCS50, Service Manual

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Print (dC612 Test Pattern UI Diagnostics), Fuser
General Procedures
Reissue
Fuser Nip Measurement (dC701 UI Diagnostics)
Purpose
Creates a special copy and measures the Fuser Nip pressure.
NOTE:
• The External Heat Roll is not latched while this function is running.
• Measurement must be done after the P/R is warm. If the P/R is not warm, copy 40 or 50
pages first.
NOTE: Functional comparison between the UI Diagnostics and the PWS Diagnostics:
UI Diag.:
1.
Measurement copy is limited only to 1 page.
2. dC701 Jam: Close first and re-run the function.
NOTE: Paper used varies depending on the market.
• XE: A4L
• NASG: Letter, 8.5x11 LEF
Procedure
1. Enter the UI Diagnostics Mode . Refer to How to Enter/Exit the UI (IOT) Diagnostics .
2. Select Subsystem Check in the “Diagnostics Setup Screen.”
3. Select Fuser Nip Measurement in the “Subsystem Screen.”
4. Select the following instructions on the screen:
a.
Set the A4L (8.5 X 11 LEF) in the Tray 5 and select Start .
b. Set the measurement copy in the Tray 5 and select Start .
5. Measure the In/Out Nip Width on the “measurement copy.” (Use the scale.)
a. Normal value
i.
In: 10.3 ± 0.3mm
ii. Out: 10.3 ± 0.3mm
6. If the measurement value differs, adjust the value. See ADJ 8.1.1 Adjusting the Fuser Nip
Pressure. Repeat Steps 4-5.
7. If the correct value is obtained, select Close and return to the “Diagnostics Setup Screen.”
26 HALFTONE Half-tone, 150C Any density pattern
Paper size: A3S or
17”S IOT (Image output)
27 HALFTONE 16 gray-scale SS,
150C 16 GRAY-SCALES IN
THE SS DIRECTION
Paper size: A3S IOT (Image output)
28 HALFTONE ProCon, 150C ProCon patch pat-
tern/16.3 X 19.3mm
patch
Paper size: A3S IOT (Image output)
29 HALFTONE TED/STV, 150C TED/STV
Paper size: A4L IOT (Image output)
30 HALFTONE Wedge SS, 150C SS direction pattern/1
gray-scale width:
12dots
Paper size: A3S IOT (Image output)
Table 1 Test Patterns (UI Diagnostic Mode)
PG NO ASIC name Pattern name Description Remarks